Alert archive / Iowa / Mesoscale Discussions in 2010
Mesoscale Discussion 1012
The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2010, 5:45 PM CDT for Mercer County, Rock Island County, Illinois; 43 counties in Iowa; 4 counties in Missouri. It was in force for 60 min.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2010, 5:45 PM CDT (22:45 UTC)
- Expired
- Jun 18, 2010, 6:45 PM CDT
- In force
- 60 min
- Issued by
- the Storm Prediction Center
All 49 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Buchanan County, IA, Cedar County, IA, Clarke County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Delaware County, IA, Des Moines County, IA, Henry County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Muscatine County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Scott County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Mercer County, IL, Rock Island County, IL, Clark County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO
The radar
The Des Moines radar (KDMX), 95 km from the middle of the area, began a volume at 22:47 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.8 hours before the alert went out and 176 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 48 J/kg
- Mixed-layer CIN
- -560 J/kg
- Mixed-layer LCL
- 1673 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 9:01 PM CDT | Severe Thunderstorm Watch | SPC | Rock Island | 6 hr |
| Jun 17, 9:43 PM CDT | Mesoscale Discussion | SPC | Stephenson | 62 min |
| Jun 17, 10:57 PM CDT | Mesoscale Discussion | SPC | Rock Island | 93 min |
| Jun 17, 11:00 PM CDT | Mesoscale Discussion | SPC | Jo Daviess, Stephenson, Winnebago | 60 min |
| Jun 17, 11:23 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Jo Daviess, Stephenson, Winnebago | 4 hr |
| Jun 18, 2:33 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 22 more | 27 min |
| Jun 18, 9:06 AM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 7 hr |
| Jun 18, 10:41 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Fulton and 24 more | 2 hr |
| Jun 18, 12:14 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Fulton and 26 more | 61 min |
| Jun 18, 12:29 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 33 more | 9 hr |
| Jun 18, 5:06 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Champaign, Cook, DeKalb and 32 more | 54 min |
| Jun 18, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Clark, Coles, Crawford, Cumberland, DeWitt and 9 more | 6 hr |
| Jun 18, 6:56 PM CDT | Mesoscale Discussion | SPC | Champaign, Edgar, Vermilion | 94 min |
| Jun 17, 7:39 PM CDT | Mesoscale Discussion | SPC | Allamakee, Audubon, Benton, Black Hawk, Boone, Bremer and 46 more | 96 min |
| Jun 17, 7:55 PM CDT | Mesoscale Discussion | SPC | Mills | 65 min |
| Jun 18, 7:47 AM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Boone, Calhoun, Carroll, Cass and 20 more | 88 min |
| Jun 18, 1:37 PM CDT | Mesoscale Discussion | SPC | Butler, Calhoun, Floyd, Franklin, Humboldt, Ida and 4 more | 113 min |
| Jun 18, 1:56 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Clarke, Decatur, Fremont and 10 more | 94 min |
| Jun 18, 2:49 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 39 more | 7 hr |
Nearby
Mesoscale Discussions in Iowa, 2010Mesoscale Discussions in Missouri, 2010Mesoscale Discussions in Illinois, 2010Every mesoscale discussion in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.